Padlock



(No Model.) I

E. WAGENKNECHT.

PADLOGK.

No. 534,929. Patented Feb. 26, 1895.

llrvrrnn STATES trios.

PATENT,

PADLOCK.

SPECIFICATION forming part of Letters Patent No. 534,929, dated February 26, 1895.

Application filed April 24,1893. Serial No. 471l678. (No model.)

To a/ZZ whom t may concern: v

Be it known that I, ERNST WAGENKNECHT, a citizen of the United States, and a resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Padlocks; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification. l

My invention relates toimprovements in padlocks, the object being to provide a novel construction of the same, whereby there is greater security against picking the same or otherwise opening byv unauthorized persons.

In the accompanying drawings: Figures 1 and 2 designate respectively two halves of a padlock, constructed in accordance with my invention, showing the shackle or bow locked. Fig. 3 is a view of the half of the padlock carrying the working mechanism, showing the shackle open or unlocked. Fig. 4 is a central vertical section of the padlock complete. Fig. 5 is a perspective view of the sliding tumbler detached. Figs. 6 and 7 are similar views of the key. Fig. 8 isadetail perspective view of the spring actuated catch which engages with the shackle. Fig. 9 is an inner face view of one of the sections of the casing. Fig. 10 is a detail perspective `view of the spring actuated catch which engages 'with the hooked end of the shackle and the dog and tumbler for holding it in engagement therewith. Fig. 1l is a detail perspective view of the dog which engages with the extension of the` shackle.

In the said drawings, the reference numerals l and 2 designate the two halves of a padlock casing, which are substantial duplicates of each other, being formed with fianges 3, 3, which are provided with bolt-holes 4, and which, when placed together,'form a space for containing the working mechanism. At one side these ianges are cut away at 5, and provided with openings to'receive the pivots of the shackle or bow 7, and at the other side are also cut away at 6, for the entrance of hooked end of the shackle. The pivoted end of the shackle is provided with an extension 8, cut

away at 9, forming a shoulder with which en- I in a key, which will be hereinafter described.

Pivoted to a stud 13, is a spring actuatedcatch 19, having one end formed with a hook 20, whichv engages with a hook 2l, on the free end of the shackle. This catch is provided with a tail 23, which extends over the tumbler. The tumbler isprovided with a coiled spring 24, and its inner end is cutaway, as seen at 25, so as to rest upon a plate 26, secured to the ange of the casing 1. It is also formed with a stud 27, which engages with said plate, so that when the tumbler is` forced inward, by its coiled spring, the cut-away end thereof will be guided to its seat on the plate 26, and prevented from beingrotated, until pulled outward by the key.

The numeral 29, designates the key formed with an annular bore 30, which is provided at its inner end with a series of screw threads 3l, corresponding in size and pitch with the threads in the end of the tumbler. It is also provided with a series of bits 32, between which engage semi-circular ribs 33, on the casing l, when the key is rotated for a purpose hereinafter described. The bit at the end of the key also engages with the tail 23 of the catch 19.

For the purpose of providing additional security against unauthorized opening of the lock, the hooked end of the shackle is provided with a laterally projecting pin, 34, which is adapted to engage with a dog 35 pivoted to one of the halves of the casing. The other end of this dog engages with the hooked end 36a of a tumbler' 36 also pivoted to said casing and provided with a coiled spring 37, which holds the dog in engagement with said pin. An arm 36b is also formed with the'tumbler to release said dog as will hereinafter appear. The dog 35 is also provided with a lateral arm 42 which engages with a notch 43 in the upper end of tumbler 19, so as to hold and retain the latter in engagement with the IOO shackle when locked. Intermediate of its ends, this tumbler is provided with an arm 38, with which engages a pin 39, on the sliding tumbler 15. A groove 40 is formed in the casing where the free end of the tumbler enters for the passage of the pin'on the hooked end of the latter.

The operation is as follows: `When locked or in the position shown in Fig. 2, the shackle is engaged with the catch 19, and the end 10, of the dog 12, engages with the shoulder 9, in the extension 8 ot the shackle. This prevents the shackle from being disengaged from the catch, and securely locks the same. The other end 13 of the dog, engages with or seats in the peripheral groove in the tumbler 15, and the cut-away end of the latter, being seated on the plate 26, rotation of the tumbler is prevented. At the same time the arm 42 of the dog 35 will engage with the notch 43, of the catch 19, and be held in place by the hooked end 36 of the tumbler 36, so that it will be impossible to disengage the said catch from the shackle until said arm is thrown out of engagement with the notch 43. To unlock the shackle, the key is inserted in a-hole 41, in the casing, and its threads engaged withthe threads of the tumbler. By now rotating the key it will be drawn inward until it is nearly screwed home when the bit on its end will engage with the semi-circular ribs whereby its inward movement is stopped. The tumbler will now be drawn toward the key disengaging the lugs 27, from plate 26, and when the key reaches home the tumbler will be rotated, causing the arm 13, of dog 12, to be actuated and the end, l0, to be disengaged from the shoulder in the extension of the shackle. At the same time the pin 39 of the tumbler 15 will strike the arm 38, actuating the tumbler 36 and causing its hooked end 36a to be thrown out of contact with the dog 35, and the arm 36b to engage with the dog and throw the arm 42 out of engagement with notch 43. As the key continues its rotary movement, the bits thereof will strike the tail 23 of the catch, and throw the latter out of engagement with the shackle, and allow the same to be opened. Upon the key being withdrawn the springs return the parts to normal position.

The purpose of the pin 34 is to throw the arm 42 out of engagement with the notch 43 of tumbler 36 so as to allow the free end of the shackle to engage with the hooked end of tumbler 19, which is accomplished by said pin striking the end 45 of the dog when the free end of the shackle is inserted in the lock.

Having thus described my invention, what I claim is 1. In a padlock, the combination with the casing, the pivoted shackle having a should ered extension, and a hook, and the pivoted dog, one end of which engages with said eX- tension, of the rotatable and slidable spring actuated tumbler having la peripheral groove with which the other end of said dog engages, and screw threads with which a key is adapted to engage, and a spring actuated pivoted catch having a tail adapted to engage with ribs in a key, substantially as described.

2. In a padlock the combination, with the casing, the shackle having a shouldered extension and the pivoted spring actuated dog one end of which engages with said extension, of the slidable and rotatable spring actuated tumbler having a peripheral groove with which the other end of said dog engages, formed with screw threads at its outer end and a cut away portion at its opposite end, the plate upon which said tumbler seats, and the pivoted hooked catch having a tail, substantially as described.

3. In a padlock, the combination with the casing, the shackle having a shouldered eX- tension, a hook and a laterally projecting pin, and the spring actuated dog one end of which engages with said extension, of the slidable and rotatable spring actuated tumbler having a peripheral groove with which the other end of said dog engages and formed 4with screw threads at its outer end, the pin secured to said tumbler, the pivoted hooked catch having a tail, the dog adapted to engage with the pin on the shackle, the pivoted .tumbler having an arm adapted to engage with the pin on the tumbler and the hook and arm adapted to engage with said last mentioned dog, substantially as described.

In testimony that I claim the foregoing as my own I have hereunto ahixed my signature in presence of two witnesses.

ERNST WAGENKNECHT.

Witnesses:

W. C. DONAHUE, J oHN W. FRANCISCA. 

